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plant hypoxia

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https://www.readbyqxmd.com/read/28716182/atp-sensing-in-living-plant-cells-reveals-tissue-gradients-and-stress-dynamics-of-energy-physiology
#1
Valentina De Col, Philippe Fuchs, Thomas Nietzel, Marlene Elsässer, Chia Pao Voon, Alessia Candeo, Ingo Seeliger, Mark D Fricker, Christopher Grefen, Ian Max Møller, Andrea Bassi, Boon Leong Lim, Marco Zancani, Andreas J Meyer, Alex Costa, Stephan Wagner, Markus Schwarzländer
Growth and development of plants is ultimately driven by light energy captured through photosynthesis. ATP acts as universal cellular energy cofactor fuelling all life processes, including gene expression, metabolism, and transport. Despite a mechanistic understanding of ATP biochemistry, ATP dynamics in the living plant have been largely elusive. Here, we establish MgATP(2-) measurement in living plants using the fluorescent protein biosensor ATeam1.03-nD/nA. We generate Arabidopsis sensor lines and investigate the sensor in vitro under conditions appropriate for the plant cytosol...
July 18, 2017: ELife
https://www.readbyqxmd.com/read/28705037/saffron-and-its-derivatives-crocin-crocetin-and-safranal-a-patent-review
#2
Maryam Rameshrad, Bibi Marjan Razavi, Hossein Hosseinzadeh
Saffron and its main components have traditionally been used as pharmaceutical agents. Current experimental research projects have also exhibited their applications in a wide spectrum of disorder treatments. Area covered: This review covers the demonstrated findings and patents on therapeutic/pharmaceutical properties of saffron and related derivatives, since 2000 to bold their outstanding merit on human health. An extensive literature review was performed in USP Patent, Patentscope, Espacenet and Google Patent in the field of CNS, cardiovascular, urogenital, dermatological and inflammatory disorders...
July 13, 2017: Expert Opinion on Therapeutic Patents
https://www.readbyqxmd.com/read/28698356/root-bending-is-antagonistically-affected-by-hypoxia-and-erf-mediated-transcription-via-auxin-signaling
#3
Emese Eysholdt-Derzso, Margret Sauter
When plants encounter soil water logging or flooding, roots are the first organs to be confronted with reduced gas diffusion resulting in limited oxygen supply. Since roots do not generate photosynthetic oxygen they are rapidly faced with oxygen shortage rendering roots particularly prone to damage. While metabolic adaptations to low oxygen conditions, that ensure basic energy supply, have been well characterized, adaptation of root growth and development have received less attention. In this study we show that hypoxic conditions cause the primary root to grow sidewise in a low oxygen environment possibly to escape soil patches with reduced oxygen availability...
July 11, 2017: Plant Physiology
https://www.readbyqxmd.com/read/28656233/resveratrol-inhibits-hypoxia-induced-proliferation-and-migration-of-pulmonary-artery-vascular-smooth-muscle-cells-by-inhibiting-the-phosphoinositide-3-kinase-protein-kinase-b-signaling-pathway
#4
Zhanjiang Guan, Li Shen, Huan Liang, Haitao Yu, Bingchang Hei, Xianguo Meng, Lei Yang
Hypoxia is a risk factor for severe chronic obstructive pulmonary disease, which aggravates the disease and may cause mortality by inducing hypoxic pulmonary hypertension (HPH). Proliferation and migration of pulmonary artery smooth muscle cells (PASMCs) may mediate this effect. Resveratrol is a phenolic compound extracted from a plant and has been reported to alleviate HPH, although the underlying mechanisms remained to be elucidated. In cancer, resveratrol has been reported to abrogate the phosphoinositide 3‑kinase/protein kinase B (AKT) signaling pathway, thereby inhibiting tumor development...
August 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/28647509/a-review-of-acalypha-indica-l-euphorbiaceae-as-traditional-medicinal-plant-and-its-therapeutic-potential
#5
REVIEW
Nor Syahiran Zahidin, Syafiqah Saidin, Razauden Mohamed Zulkifli, Ida Idayu Muhamad, Harisun Ya'akob, Hadi Nur
ETHNOPHARMACOLOGICAL RELEVANCE: Acalypha indica is an herbal plant that grows in wet, temperate and tropical region, primarily along the earth's equator line. This plant is considered by most people as a weed and can easily be found in these regions. Although this plant is a weed, Acalypha indica has been acknowledged by local people as a useful source of medicine for several therapeutic treatments. They consume parts of the plant for many therapeutics purposes such as anthelmintic, anti-ulcer, bronchitis, asthma, wound healing, anti-bacterial and other applications...
June 21, 2017: Journal of Ethnopharmacology
https://www.readbyqxmd.com/read/28636266/marap2-4-a-waterlogging-responsive-erf-from-mentha-regulates-bidirectional-sugar-transporter-atsweet10-to-modulate-stress-response-in-arabidopsis
#6
Ujjal J Phukan, Gajendra Singh Jeena, Vineeta Tripathi, Rakesh Kumar Shukla
As waterlogging and successive events severely influence growth and development of economically important plants, we attempted to characterize the role of a waterlogging-responsive Group I (A-6) Ethylene response factor (MaRAP2-4) from Mentha arvensis. Waterlogging, ethylene and Methyl jasmonate rapidly induced the expression of MaRAP2-4. MaRAP2-4 interacted with multiple cis-elements like Dehydration response elements (DRE1/2), Anoxia/Jasmonic acid response element (JARE) and GCC box showing its involvement in multiple responses...
June 21, 2017: Plant Biotechnology Journal
https://www.readbyqxmd.com/read/28605408/casparian-bands-and-suberin-lamellae-in-exodermis-of-lateral-roots-an-important-trait-of-roots-system-response-to-abiotic-stress-factors
#7
Edita Tylová, Eva Pecková, Zuzana Blascheová, Aleš Soukup
Background and Aims: Root absorptive characteristics rely on the presence of apoplastic barriers. However, little is known about the establishment of these barriers within a complex root system, particularly in a major portion of them - the lateral roots. In Zea mays L., the exodermis differentiates under the influence of growth conditions. Therefore, the species presents a suitable model to elucidate the cross-talk among environmental conditions, branching pattern and the maturation of barriers within a complex root system involved in the definition of the plant-soil interface...
June 12, 2017: Annals of Botany
https://www.readbyqxmd.com/read/28579900/imperatorin-protects-h9c2-cardiomyoblasts-cells-from-hypoxia-reoxygenation-induced-injury-through-activation-of-erk-signaling-pathway
#8
Bihong Liao, Ruimian Chen, Feng Lin, Aihuan Mai, Jie Chen, Huimin Li, Shaohong Dong, Zhenglei Xu
BACKGROUND: Imperatorin is a compound found in plants and has been widely used in Chinese medicine for many years. It has many pharmacological effects, including the recently reported anti-apoptotic function, however, the mechanism largely remains unclear. This study is aimed to elucidate the mechanism of Imperatorin's anti-apoptotic function. METHODS: A model of hypoxia and reoxygenation (H/R) treated h9c2 cardiomyoblasts was successfully constructed. The cells were treated with H/R condition, and followed by adding Imperatorin alone, Imperatorin with ERK inhibitor and/or ERK inhibitor alone, to examine the cell viability by Cell Counting Kit-8 assay, cell apoptosis rate by flow cytometry, and ERK expression by Western-blot under different conditions...
May 2017: Saudi Pharmaceutical Journal: SPJ: the Official Publication of the Saudi Pharmaceutical Society
https://www.readbyqxmd.com/read/28568609/two-minuses-can-make-a-plus-waterlogging-and-elevated-co2-interactions-in-sweet-cherry-prunus-avium-cultivars
#9
Margarita Pérez-Jiménez, María Hernández-Munuera, M Carmen Piñero, Gregorio López-Ortega, Francisco M Del Amor
The increase in the ambient concentration of CO2 and other greenhouse gases is producing climate events that can compromise crop survival. However, high CO2 concentrations are sometimes able to mitigate certain stresses such as salinity or drought. In this experiment, the effects of waterlogging and CO2 are studied in combination to elucidate the eventual response in sweet cherry trees. For this purpose, four sweet cherry cultivars ('Burlat', 'Cashmere', 'Lapins, and 'New Star') were grafted on a typically hypoxia-tolerant rootstock ('Mariana 2624') and were submitted to waterlogging for 7 days at either ambient CO2 concentration (400 µmol mol(-1) ) or at elevated CO2 (800 µmol mol(-1) )...
June 1, 2017: Physiologia Plantarum
https://www.readbyqxmd.com/read/28567028/gelsemium-elegans-poisoning-a-case-with-8%C3%A2-months-of-follow-up-and-review-of-the-literature
#10
Zhou Zhou, Lei Wu, Yuhua Zhong, Xiaobo Fang, Yanmei Liu, Hongbing Chen, Weixi Zhang
BACKGROUND: Gelsemium elegans (G. elegans) is a toxic plant indigenous to Southeast Asia. It is highly poisonous due to its strong respiratory depressive effect. However, G. elegans poisoning cases have not been summarized comprehensively and are rarely reported in English journals. Furthermore, none of the present reports present prognosis in detail. CASE PRESENTATION: A 26-year-old female was found comatose at home and brought to the hospital with deep coma, hypoxia, and acidosis...
2017: Frontiers in Neurology
https://www.readbyqxmd.com/read/28559476/noncanonical-alternative-polyadenylation-contributes-to-gene-regulation-in-response-to-hypoxia
#11
Laura de Lorenzo, Reed Sorenson, Julia Bailey-Serres, Arthur G Hunt
Stresses from various environmental challenges continually confront plants, and their responses are important for growth and survival. One molecular response to such challenges involves the alternative polyadenylation of mRNA. In plants, it is unclear how stress affects the production and fate of alternative mRNA isoforms. Using a genome-scale approach, we show that in Arabidopsis thaliana, hypoxia leads to increases in the number of mRNA isoforms with polyadenylated 3' ends that map to 5'-untranslated regions (UTRs), introns, and protein-coding regions...
June 2017: Plant Cell
https://www.readbyqxmd.com/read/28549801/methanolic-extract-of-boswellia-serrata-exhibits-anti-cancer-activities-by-targeting-microsomal-prostaglandin-e-synthase-1-in-human-colon-cancer-cells
#12
Tayebeh Ranjbarnejad, Massoud Saidijam, Shirin Moradkhani, Rezvan Najafi
BACKGROUND: Colorectal cancer (CRC) is the most common cancer. A proper method to reduce mortality of CRC is chemoprevention to prevent initiation and promotion of intestinal tumorgenesis. One of the promising and developing chemopreventive agents is natural compounds found in plants. Frankincense, the resin extract from the Boswellia specious, has been used in traditional and modern medicine for treating various diseases with very minimal side effects. In the current study, we investigated the anti-cancer activity of methanolic extract of Boswellia serrata (B...
May 24, 2017: Prostaglandins & Other Lipid Mediators
https://www.readbyqxmd.com/read/28543362/commd1-a-multifunctional-regulatory-protein
#13
Mario Riera Romo
The COMMD Protein Family is highly conserved among multicellular eukaryotic organisms and many orthologs of human COMMD genes have been found in different species of plants, invertebrates, lower vertebrates and mammals. COMMD1 is the best characterized member of the family and is conserved among vertebrates. This protein represents a pleiotropic factor involved in the regulation of many cellular and physiological processes that include copper and cholesterol homeostasis, ionic transport, oxidative stress, protein aggregation, protein trafficking, NF-κB-mediated transcription, hypoxia induced transcription, DNA damage response and oncogenesis...
May 20, 2017: Journal of Cellular Biochemistry
https://www.readbyqxmd.com/read/28532102/islet-encapsulated-implantable-composite-hollow-fiber-membrane-based-device-a-bioartificial-pancreas
#14
Rohit S Teotia, Sachin Kadam, Atul Kumar Singh, Surendra Kumar Verma, Ashutosh Bahulekar, Sujata Kanetkar, Jayesh Bellare
Islets from xeno-sources and islet like clusters derived from autologus stem cells have emerged as alternatives to cadaveric pancreas used for treatment of type 1 diabetes. However, the immuno-isolation of these islets from the host immune system suffers from the issue of biocompatibility and hypoxia. To overcome the issues of immunobarrier biocompatibility, we developed a Polysulfone (Psf)/TPGS composite hollow fiber membrane (HFM) using a hollow fiber spinning pilot plant specially developed for this purpose...
August 1, 2017: Materials Science & Engineering. C, Materials for Biological Applications
https://www.readbyqxmd.com/read/28487707/functional-balancing-of-the-hypoxia-regulators-rap2-12-and-hra1-takes-place-in-vivo-in-arabidopsis-thaliana-plants
#15
Beatrice Giuntoli, Francesco Licausi, Hans van Veen, Pierdomenico Perata
Plants are known to respond to variations in cellular oxygen availability and distribution by quickly adapting the transcription rate of a number of genes, generally associated to improved energy usage pathways, oxygen homeostasis and protection from harmful products of anaerobic metabolism. In terrestrial plants, such coordinated gene expression program is promoted by a conserved subfamily of ethylene responsive transcription factors called ERF-VII, which act as master activators of hypoxic gene transcription...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28465235/molecular-and-physiological-characterization-of-athigd1-in-arabidopsis
#16
Soong-Taek Hwang, Huiling Li, Hemasundar Alavilli, Byeong-Ha Lee, Dongsu Choi
Flooding is a principal stress that limits plant productivity. The sensing of low oxygen levels (hypoxia) plays a critical role in the signaling pathway that functions in plants in flooded environments. In this study, to investigate hypoxia response mechanisms in Arabidopsis, we identified three hypoxia-related genes and subjected one of these genes, Arabidopsis thaliana HYPOXIA-INDUCED GENE DOMAIN 1 (AtHIGD1), to molecular characterization including gene expression analysis and intracellular localization of the encoded protein...
June 10, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/28447117/a-new-major-effect-qtl-for-waterlogging-tolerance-in-wild-barley-h-spontaneum
#17
Xuechen Zhang, Yun Fan, Sergey Shabala, Anthony Koutoulis, Lana Shabala, Peter Johnson, Hongliang Hu, Meixue Zhou
We report the first study on the unique allele from wild barley that can improve waterlogging tolerance in cultivated barley with a substantially higher contribution to aerenchyma formation. Waterlogging is one of the major abiotic stresses that dramatically reduce barley crop yield. Direct selection on waterlogging tolerance in the field is less effective due to its viability to environment. The most effective way of selection is to choose traits that make significant contributions to the overall tolerance and are easy to score...
August 2017: TAG. Theoretical and Applied Genetics. Theoretische und Angewandte Genetik
https://www.readbyqxmd.com/read/28443120/dissecting-low-atmospheric-pressure-stress-transcriptome-responses-to-the-components-of-hypobaria-in-arabidopsis
#18
Mingqi Zhou, Jordan B Callaham, Matthew Reyes, Michael Stasiak, Alberto Riva, Agata K Zupanska, Mike A Dixon, Anna-Lisa Paul, Robert J Ferl
Controlled hypobaria presents biology with an environment that is never encountered in terrestrial ecology, yet the apparent components of hypobaria are stresses typical of terrestrial ecosystems. High altitude, for example, presents terrestrial hypobaria always with hypoxia as a component stress, since the relative partial pressure of O2 is constant in the atmosphere. Laboratory-controlled hypobaria, however, allows the dissection of pressure effects away from the effects typically associated with altitude, in particular hypoxia, as the partial pressure of O2 can be varied...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28421084/characterization-of-the-heme-pocket-structure-and-ligand-binding-kinetics-of-non-symbiotic-hemoglobins-from-the-model-legume-lotus-japonicus
#19
Laura Calvo-Begueria, Bert Cuypers, Sabine Van Doorslaer, Stefania Abbruzzetti, Stefano Bruno, Herald Berghmans, Sylvia Dewilde, Javier Ramos, Cristiano Viappiani, Manuel Becana
Plant hemoglobins (Hbs) are found in nodules of legumes and actinorhizal plants but also in non-symbiotic organs of monocots and dicots. Non-symbiotic Hbs (nsHbs) have been classified into two phylogenetic groups. Class 1 nsHbs show an extremely high O2 affinity and are induced by hypoxia and nitric oxide (NO), whereas class 2 nsHbs have moderate O2 affinity and are induced by cold and cytokinins. The functions of nsHbs are still unclear, but some of them rely on the capacity of hemes to bind diatomic ligands and catalyze the NO dioxygenase (NOD) reaction (oxyferrous Hb + NO → ferric Hb + nitrate)...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28420736/deciphering-the-regulatory-network-between-the-srebp-pathway-and-protein-secretion-in-neurospora-crassa
#20
Lina Qin, Vincent W Wu, N Louise Glass
Sterol regulatory element binding proteins (SREBPs) are conserved from yeast to mammalian cells and function in the regulation of sterol homeostasis. In fungi, the SREBP pathway has been implicated in the adaptation to hypoxia and in virulence. In Neurospora crassa and Trichoderma reesei, the SREBP pathway also negatively regulates protein secretion under lignocellulolytic conditions. Here we utilized global transcriptional profiling combined with genetic and physiological analyses to address the regulatory link between the SREBP pathway and protein secretion in N...
April 18, 2017: MBio
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